org.elasticsearch.index.analysis.PreConfiguredAnalysisComponent Maven / Gradle / Ivy
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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.index.analysis;
import org.elasticsearch.Version;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.indices.analysis.AnalysisModule;
import org.elasticsearch.indices.analysis.PreBuiltCacheFactory;
import java.io.IOException;
/**
* Shared implementation for pre-configured analysis components.
*/
public abstract class PreConfiguredAnalysisComponent implements AnalysisModule.AnalysisProvider {
private final String name;
private final PreBuiltCacheFactory.PreBuiltCache cache;
protected PreConfiguredAnalysisComponent(String name, PreBuiltCacheFactory.CachingStrategy cache) {
this.name = name;
this.cache = PreBuiltCacheFactory.getCache(cache);
}
@Override
public T get(IndexSettings indexSettings, Environment environment, String name, Settings settings) throws IOException {
Version versionCreated = Version.indexCreated(settings);
synchronized (this) {
T factory = cache.get(versionCreated);
if (factory == null) {
factory = create(versionCreated);
cache.put(versionCreated, factory);
}
return factory;
}
}
/**
* The name of the analysis component in the API.
*/
public String getName() {
return name;
}
protected abstract T create(Version version);
}